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<link rel="alternate" hreflang="en-us" href="https://iotdb.apache.org/UserGuide/V1.0.x/Query-Data/Fill.html"><meta property="og:url" content="https://iotdb.apache.org/zh/UserGuide/V1.0.x/Query-Data/Fill.html"><meta property="og:site_name" content="IoTDB Website"><meta property="og:title" content="结果集补空值"><meta property="og:description" content="功能介绍 当执行一些数据查询时，结果集的某行某列可能没有数据，则此位置结果为空，但这种空值不利于进行数据可视化展示和分析，需要对空值进行填充。 在 IoTDB 中，用户可以使用 FILL 子句指定数据缺失情况下的填充模式，允许用户按照特定的方法对任何查询的结果集填充空值，如取前一个不为空的值、线性插值等。 语法定义 FILL 子句的语法定义如下： 注意..."><meta property="og:type" content="article"><meta property="og:locale" content="zh-CN"><meta property="og:locale:alternate" content="en-US"><script type="application/ld+json">{"@context":"https://schema.org","@type":"Article","headline":"结果集补空值","image":[""],"dateModified":null,"author":[]}</script><link rel="icon" href="/favicon.ico"><meta name="Description" content="Apache IoTDB: Time Series Database for IoT"><meta name="Keywords" content="TSDB, time series, time series database, IoTDB, IoT database, IoT data management,时序数据库, 时间序列管理, IoTDB, 物联网数据库, 实时数据库, 物联网数据管理, 物联网数据"><meta name="baidu-site-verification" content="wfKETzB3OT"><meta name="google-site-verification" content="mZWAoRY0yj_HAr-s47zHCGHzx5Ju-RVm5wDbPnwQYFo"><title>结果集补空值 | IoTDB Website</title><meta name="description" content="功能介绍 当执行一些数据查询时，结果集的某行某列可能没有数据，则此位置结果为空，但这种空值不利于进行数据可视化展示和分析，需要对空值进行填充。 在 IoTDB 中，用户可以使用 FILL 子句指定数据缺失情况下的填充模式，允许用户按照特定的方法对任何查询的结果集填充空值，如取前一个不为空的值、线性插值等。 语法定义 FILL 子句的语法定义如下： 注意...">
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clickable"><!----><span class="title">参考</span><span class="arrow end"></span></button><!----></section></li></ul><!--[--><!----><!--]--></aside><!--[--><main class="page" id="main-content"><!--[--><!----><nav class="breadcrumb disable"></nav><div class="page-title"><h1><!---->结果集补空值</h1><div class="page-info"><!----><!----><!----><!----><span class="page-reading-time-info" aria-label="阅读时间"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>大约 4 分钟</span><meta property="timeRequired" content="PT4M"></span><!----><!----></div><hr></div><div class="toc-place-holder"><aside id="toc"><!--[--><!----><!--]--><div class="toc-header">此页内容<button class="print-button" title="打印"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 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router-link-exact-active toc-link level2">填充方式</a></li><ul class="toc-list"><!--[--><li class="toc-item"><a aria-current="page" href="/zh/UserGuide/V1.0.x/Query-Data/Fill.html#previous-填充" class="router-link-active router-link-exact-active toc-link level3">PREVIOUS 填充</a></li><!----><!--]--><!--[--><li class="toc-item"><a aria-current="page" href="/zh/UserGuide/V1.0.x/Query-Data/Fill.html#linear-填充" class="router-link-active router-link-exact-active toc-link level3">LINEAR 填充</a></li><!----><!--]--><!--[--><li class="toc-item"><a aria-current="page" href="/zh/UserGuide/V1.0.x/Query-Data/Fill.html#常量填充" class="router-link-active router-link-exact-active toc-link level3">常量填充</a></li><!----><!--]--></ul><!--]--></ul></div><!--[--><!----><!--]--></aside></div><!----><div class="theme-hope-content"><!--
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--><h1 id="结果集补空值" tabindex="-1"><a class="header-anchor" href="#结果集补空值" aria-hidden="true">#</a> 结果集补空值</h1><h2 id="功能介绍" tabindex="-1"><a class="header-anchor" href="#功能介绍" aria-hidden="true">#</a> 功能介绍</h2><p>当执行一些数据查询时，结果集的某行某列可能没有数据，则此位置结果为空，但这种空值不利于进行数据可视化展示和分析，需要对空值进行填充。</p><p>在 IoTDB 中，用户可以使用 <code>FILL</code> 子句指定数据缺失情况下的填充模式，允许用户按照特定的方法对任何查询的结果集填充空值，如取前一个不为空的值、线性插值等。</p><h2 id="语法定义" tabindex="-1"><a class="header-anchor" href="#语法定义" aria-hidden="true">#</a> 语法定义</h2><p><strong><code>FILL</code> 子句的语法定义如下：</strong></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code>FILL <span class="token string">&#39;(&#39;</span> PREVIOUS <span class="token operator">|</span> LINEAR <span class="token operator">|</span> constant <span class="token string">&#39;)&#39;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p><strong>注意：</strong></p><ul><li>在 <code>Fill</code> 语句中只能指定一种填充方法，该方法作用于结果集的全部列。</li><li>空值填充不兼容 0.13 版本及以前的语法（即不支持 <code>FILL((&lt;data_type&gt;[&lt;fill_method&gt;(, &lt;before_range&gt;, &lt;after_range&gt;)?])+)</code>）</li></ul><h2 id="填充方式" tabindex="-1"><a class="header-anchor" href="#填充方式" aria-hidden="true">#</a> 填充方式</h2><p><strong>IoTDB 目前支持以下三种空值填充方式：</strong></p><ul><li><code>PREVIOUS</code> 填充：使用该列前一个非空值进行填充。</li><li><code>LINEAR</code> 填充：使用该列前一个非空值和下一个非空值的线性插值进行填充。</li><li>常量填充：使用指定常量填充。</li></ul><p><strong>各数据类型支持的填充方法如下表所示：</strong></p><table><thead><tr><th style="text-align:left;">数据类型</th><th style="text-align:left;">支持的填充方法</th></tr></thead><tbody><tr><td style="text-align:left;">BOOLEAN</td><td style="text-align:left;"><code>PREVIOUS</code>、常量</td></tr><tr><td style="text-align:left;">INT32</td><td style="text-align:left;"><code>PREVIOUS</code>、<code>LINEAR</code>、常量</td></tr><tr><td style="text-align:left;">INT64</td><td style="text-align:left;"><code>PREVIOUS</code>、<code>LINEAR</code>、常量</td></tr><tr><td style="text-align:left;">FLOAT</td><td style="text-align:left;"><code>PREVIOUS</code>、<code>LINEAR</code>、常量</td></tr><tr><td style="text-align:left;">DOUBLE</td><td style="text-align:left;"><code>PREVIOUS</code>、<code>LINEAR</code>、常量</td></tr><tr><td style="text-align:left;">TEXT</td><td style="text-align:left;"><code>PREVIOUS</code>、常量</td></tr></tbody></table><p><strong>注意：</strong> 对于数据类型不支持指定填充方法的列，既不会填充它，也不会报错，只是让那一列保持原样。</p><p><strong>下面通过举例进一步说明。</strong></p><p>如果我们不使用任何填充方式：</p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">&gt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">&lt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>查询结果如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>+-----------------------------+-------------------------------+--------------------------+
| Time|root.sgcc.wf03.wt01.temperature|root.sgcc.wf03.wt01.status|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:37:00.000+08:00| 21.93| true|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:38:00.000+08:00| null| false|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:39:00.000+08:00| 22.23| null|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:40:00.000+08:00| 23.43| null|
+-----------------------------+-------------------------------+--------------------------+
Total line number = 4
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="previous-填充" tabindex="-1"><a class="header-anchor" href="#previous-填充" aria-hidden="true">#</a> <code>PREVIOUS</code> 填充</h3><p><strong>对于查询结果集中的空值，使用该列前一个非空值进行填充。</strong></p><p><strong>注意：</strong> 如果结果集的某一列第一个值就为空，则不会填充该值，直到遇到该列第一个非空值为止。</p><p>例如，使用 <code>PREVIOUS</code> 填充，SQL 语句如下：</p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">&gt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">&lt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span>previous<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p><code>PREVIOUS</code> 填充后的结果如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>+-----------------------------+-------------------------------+--------------------------+
| Time|root.sgcc.wf03.wt01.temperature|root.sgcc.wf03.wt01.status|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:37:00.000+08:00| 21.93| true|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:38:00.000+08:00| 21.93| false|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:39:00.000+08:00| 22.23| false|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:40:00.000+08:00| 23.43| false|
+-----------------------------+-------------------------------+--------------------------+
Total line number = 4
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="linear-填充" tabindex="-1"><a class="header-anchor" href="#linear-填充" aria-hidden="true">#</a> <code>LINEAR</code> 填充</h3><p><strong>对于查询结果集中的空值，使用该列前一个非空值和下一个非空值的线性插值进行填充。</strong></p><p><strong>注意：</strong></p><ul><li>如果某个值之前的所有值都为空，或者某个值之后的所有值都为空，则不会填充该值。</li><li>如果某列的数据类型为boolean/text，我们既不会填充它，也不会报错，只是让那一列保持原样。</li></ul><p>例如，使用 <code>LINEAR</code> 填充，SQL 语句如下：</p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">&gt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">&lt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span>linear<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p><code>LINEAR</code> 填充后的结果如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>+-----------------------------+-------------------------------+--------------------------+
| Time|root.sgcc.wf03.wt01.temperature|root.sgcc.wf03.wt01.status|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:37:00.000+08:00| 21.93| true|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:38:00.000+08:00| 22.08| false|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:39:00.000+08:00| 22.23| null|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:40:00.000+08:00| 23.43| null|
+-----------------------------+-------------------------------+--------------------------+
Total line number = 4
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="常量填充" tabindex="-1"><a class="header-anchor" href="#常量填充" aria-hidden="true">#</a> 常量填充</h3><p><strong>对于查询结果集中的空值，使用指定常量填充。</strong></p><p><strong>注意：</strong></p><ul><li><p>如果某列数据类型与常量类型不兼容，既不填充该列，也不报错，将该列保持原样。对于常量兼容的数据类型，如下表所示：</p><table><thead><tr><th style="text-align:left;">常量类型</th><th style="text-align:left;">能够填充的序列数据类型</th></tr></thead><tbody><tr><td style="text-align:left;"><code>BOOLEAN</code></td><td style="text-align:left;"><code>BOOLEAN</code> <code>TEXT</code></td></tr><tr><td style="text-align:left;"><code>INT64</code></td><td style="text-align:left;"><code>INT32</code> <code>INT64</code> <code>FLOAT</code> <code>DOUBLE</code> <code>TEXT</code></td></tr><tr><td style="text-align:left;"><code>DOUBLE</code></td><td style="text-align:left;"><code>FLOAT</code> <code>DOUBLE</code> <code>TEXT</code></td></tr><tr><td style="text-align:left;"><code>TEXT</code></td><td style="text-align:left;"><code>TEXT</code></td></tr></tbody></table></li><li><p>当常量值大于 <code>INT32</code> 所能表示的最大值时，对于 <code>INT32</code> 类型的列，既不填充该列，也不报错，将该列保持原样。</p></li></ul><p>例如，使用 <code>FLOAT</code> 类型的常量填充，SQL 语句如下：</p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">&gt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">&lt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span><span class="token number">2.0</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p><code>FLOAT</code> 类型的常量填充后的结果如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>+-----------------------------+-------------------------------+--------------------------+
| Time|root.sgcc.wf03.wt01.temperature|root.sgcc.wf03.wt01.status|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:37:00.000+08:00| 21.93| true|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:38:00.000+08:00| 2.0| false|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:39:00.000+08:00| 22.23| null|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:40:00.000+08:00| 23.43| null|
+-----------------------------+-------------------------------+--------------------------+
Total line number = 4
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>再比如，使用 <code>BOOLEAN</code> 类型的常量填充，SQL 语句如下：</p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">&gt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">&lt;=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p><code>BOOLEAN</code> 类型的常量填充后的结果如下：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>+-----------------------------+-------------------------------+--------------------------+
| Time|root.sgcc.wf03.wt01.temperature|root.sgcc.wf03.wt01.status|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:37:00.000+08:00| 21.93| true|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:38:00.000+08:00| null| false|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:39:00.000+08:00| 22.23| true|
+-----------------------------+-------------------------------+--------------------------+
|2017-11-01T16:40:00.000+08:00| 23.43| true|
+-----------------------------+-------------------------------+--------------------------+
Total line number = 4
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></div><!----><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb/edit/rel/1.0/docs/zh/UserGuide/Query-Data/Fill.md" rel="noopener noreferrer" target="_blank" aria-label="发现错误？在 GitHub 上编辑此页" class="nav-link label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="meta-item git-info"><!----><!----></div></footer><nav class="page-nav"><a href="/zh/UserGuide/V1.0.x/Query-Data/Having-Condition.html" class="nav-link prev" aria-label="聚合结果过滤"><div class="hint"><span class="arrow start"></span>上一页</div><div class="link"><!---->聚合结果过滤</div></a><a href="/zh/UserGuide/V1.0.x/Query-Data/Pagination.html" class="nav-link next" aria-label="结果集分页"><div class="hint">下一页<span class="arrow end"></span></div><div class="link">结果集分页<!----></div></a></nav><!----><!----><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">rel/1.0</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2023 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"> We use <a href="https://analytics.google.com">Google Analytics</a> to collect anonymous, aggregated usage information. </p></footer></div><!--]--><!--]--><!----><!--]--></div>
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